Q.3) A 230 V, 750 RPM, 25 A dc series motor is driving at rated conditions a load, whose torqueis proportional to the square of the speed. The combined resistance of armature and field is 1 ?.Calculate the motor terminal voltage and current for a speed of 400 RPM. State the assumptionmade for solving problem. (Ans: V = 71.64 V, I? = 13.33 A)Q.4) A dc separately excited motor is running at 800 RPM driving a load whose torque isconstant. Motor armature current is 500 A. The armature resistance dro